From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C506C2BB85 for ; Fri, 10 Apr 2020 20:13:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 03C8C2078E for ; Fri, 10 Apr 2020 20:13:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586549617; bh=5wsfNkHN6jWQdP04K9zIpc0tM+4AxdKzcX7x0Rpy9jw=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=CeJm1JATAoRd6EsU0PsbOXXVpeuVMXl0VusGFMA3fqI2snUpNW+cb9LE+8Qhse5E3 lqqNw/+BWHmoxWlo49R/dXlOA0eovGXDkbmTu6oGrp9zzxOe1ZEfyFrJirnkS44c0I DriOo6EpMz3Cz73Clv0ZCWQX1zrR3UlMJ4kEmCaA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726654AbgDJUNe (ORCPT ); Fri, 10 Apr 2020 16:13:34 -0400 Received: from mail-lj1-f193.google.com ([209.85.208.193]:43117 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726638AbgDJUNe (ORCPT ); Fri, 10 Apr 2020 16:13:34 -0400 Received: by mail-lj1-f193.google.com with SMTP id h25so3037171lja.10 for ; Fri, 10 Apr 2020 13:13:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=9VjQx3sNHjM9Ybj3pkSSt2cbo4c8KdpiMcEUyZvcRTo=; b=UOOqKTuXJVB5DXty2pYL9sGwg5sKoaPO1nkz6bubzMgOw3mgqg/9f+d87SHPIUvrn6 9yxpYYsgN6kaa4psBhtDf7aR34kNFUq8TM8itWny38GWbXMhsFd6wadAZV0acAAS5poB j31L3xH37rrb4O1RLNKQQgE68i9bKbaWVBk04= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=9VjQx3sNHjM9Ybj3pkSSt2cbo4c8KdpiMcEUyZvcRTo=; b=gbhek+iRk88Q50K8Edhe3F1bw6ZIu8hzSkixlEfI+qmgGEnv3lfUBvXcZAI+S3ZUrN NreEjeNGYhj5YYD92r6GPy+BpHEv/xBiK2xYmn3oDq71bCJnPBwMzS9MnxBjcKBO9WIU JfyOdhO0t4HnI/KGrhAIm5FoGNu9mVzTpb00P/0RfGVyFfV0KFHVX8l7w45q/CyoKkPj U1mFBsK9p/Fjqgfu2PjBg3G5svbZaNb0vzWRCcpb5ixhy/AzUSDKHRcDSHoPFa7fPT7e k3zir6WYGF0efEE6uwr/2Z0QvkJb8Hph0uh/PKUmJQgjqLdbyEJvYcwO8SYCwuUnxl5l gp8A== X-Gm-Message-State: AGi0PuY5CTu2QmU/OIPtsCGFclAhrGx7DmM/lbcMX4fhAVX6OK2JHAdM xYkWJvUUoW5jlLYMy0pYZN7pQrXlin0= X-Google-Smtp-Source: APiQypLMu7p4gmARvK+/uG56owwgDwgEK23pdGdrk3zUUBtwVGcFuW5P+SrPB/ZA/7wgck4V7S9rDg== X-Received: by 2002:a2e:3812:: with SMTP id f18mr4048010lja.67.1586549610004; Fri, 10 Apr 2020 13:13:30 -0700 (PDT) Received: from mail-lj1-f174.google.com (mail-lj1-f174.google.com. [209.85.208.174]) by smtp.gmail.com with ESMTPSA id d9sm1731027ljg.39.2020.04.10.13.13.28 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Apr 2020 13:13:28 -0700 (PDT) Received: by mail-lj1-f174.google.com with SMTP id 142so3049894ljj.7 for ; Fri, 10 Apr 2020 13:13:28 -0700 (PDT) X-Received: by 2002:a2e:a58e:: with SMTP id m14mr3857281ljp.204.1586549608204; Fri, 10 Apr 2020 13:13:28 -0700 (PDT) MIME-Version: 1.0 References: <20200410132706.170811b7@canb.auug.org.au> <27c212c4-b522-561d-411c-e74dc0ff0b74@infradead.org> <2b0f5d2e-3fe5-10c9-2a9a-9a0b341a52d5@infradead.org> In-Reply-To: From: Linus Torvalds Date: Fri, 10 Apr 2020 13:13:12 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: linux-next: Tree for Apr 10 (lib/test_printf.ko) To: Randy Dunlap Cc: Greg Kroah-Hartman , "Rafael J. Wysocki" , Stephen Rothwell , Linux Next Mailing List , Linux Kernel Mailing List , Rasmus Villemoes Content-Type: text/plain; charset="UTF-8" Sender: linux-next-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Fri, Apr 10, 2020 at 12:41 PM Randy Dunlap wrote: > > On 4/10/20 12:05 PM, Linus Torvalds wrote: > > > > That may be because of something like a DEBUG_INFO_REDUCED option. > > No, that's enabled. (see below) That's kind of the point. DEBUG_INFO_REDUCED doesn't do the _full_ debug info. And honestly, that's the right thing for 99% of all people. The full debug info is _huge_. Enormous. It takes up lots of space, and it makes for slower builds. So normal people should use REDUCED. But the full debug info does give some nicer debug stack traces with dump_stack.sh, so for things like automated robots etc it's a great thing. > This is with FRAME_POINTER, not UNWIND_ORC. Maybe that's the difference? That might cause the question marks and some additional uncertainty in the underlying raw stack traces that the kernel reports, but no, it shouldn't matter for what dump_stack.sh does. Linus